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H co'rr\x..-,T PLATE Pu'NfcHmfG MACHINE. M-PLICANUNHLED 1m17.191s. i Y f, Patented Oat. 28,1919.;-

ama/ENIGH H. COHEN. PLATE"PUNCHING' MACHINE.

APPLICATION FILED'DEC327. 191B.

Patented Oct.' 28, 1919.

5 SHEETS-SHEET 3- 'Hihi N INVENTOR Y @ATTORE H. coHfm. y PLATE PUNCHING NIACHIN APPLICATION FJLED DEC-27x l9l8.

Patented Oct'. 28, 1919.

5 SHEETS-SHEET 4.

INVENTOR ATOREY HARRY COHN, OF PHILADELPHIA, PENNSYLVANIA,

rtararmvcnme MACHINE.'

To all 'whom it may concern:

, Be it known that I, HARRY COHEN, a citizen of the United States, residing at Philadelphia, in the county. of Philadelphia and v State of-Pennsylvania, have invented certain new and useful Improvements in Plate- Funching Machines, of is a specification. y

One object ofmy invention is to provide a plate punching machine of simple and which the following durable construction which will be operative to punch a number of holes at the same' time.

Another object is to provide means operative to permit the ready insertion and removal of. the plates before and after punchnother obj ect is to construct mymachine in such manner that certain of the parts can be readily changed so 'as to punchholes at diferent distances apart. I These Vobje`cts, v and other adv, ta

geous lends* whichwill be described hereinlftenfl 'sov attainin the following manner, reference being had the accompanying drawings-in which 1 v Figure 1 is a front improved machine,

Fig. 2 is a' sectional elevation ofmy imend elevationof my proved machine taken on the line 2-2 of f Fig. 3, v y

Fig. 3 is a sectional .plan view taken on the line 3-3 of Fig. 2; 4a portion of the punched plate being broken away,

Fig. e is a view of similar nature to that of Fig. 2 showing the plate after it lhas been punched, stripped from the punches, and' .raised from the bed at an incline ready to slide out of the machine,

Fig.' 5 is an enlarged fragmentary section showing certain of the elements of my invention, A

Flg. 6 is a fragmentary elevation showing certain of the parts of my improved machine operative to raise and hold the punched plate at an incline, as illustrated in Fig. 4,.

and

Fig. l7 is La top plan vview showing a punched plate capable 'of being punched by my improved machine.

Referring to -the drawings, 8 represents the frame of my improved machine which includes two heavy metallic rside walls 9 and i 10 whichrare spaced apart and, at their top.

uppprt a bridge cover 11 which is secured olts 12.to` said Walls 9 and 10. lTheY walls 9 and 10 at their tops provide bear# Specification of Letters Patent.

ings for the crank shaft 13 having cranks 14C and '15 thereon. The 'bridge cover 11 has a central pendant bearing 16 for supporting the crank shaft 13 midway between the inner surfaces 17 and 18 of the walls 9 and 10 respectively. The crank shaft 13 has a heavy gear wheel 19 secured thereto outside of the frame 8, said gear wheel being in mesh witha smaller gear wheel 20 on a main driving shaft 21,V said driving shaft Crank arms 33 and 34, respectively, connect the cranks'l: and 15 with the pins 31 and 32. Thus,l it will be seen that a rotation of the crank shaft 13 will impart a reciprocating movement of the head 24 vertically withinthe-slideways 27 and 28.-

'The-lowerfsurface of the head 2A has a v punch casing 35 secured thereto, 'said punch casing being preferably made in sections 36 which are independently secured to the head 24 by screws 37, which fit ,within tapped holes in said head 24'. fAny of the sections 36 is capable of supporting a punch Patented 0st.' 23, 1919.

Application led December 27',` 1918. Serial No. 268,549. I l v 38 which is removably secured within said sections by set screws 39 (Fig. 5).

`The arrangement -of the punches 38, as shown in the several views of drawing, is such. as to punch a plate having the arrangement of holes, lasillustrated in Fig. 7. However, itwill be understood that this arrangement can be changed either by removing and substituting different sections 36 in 'the punch casing 35 or by removing certain of l the punches 38 by loosening 'their respective set screws 39.

provided with extra tapped holes 40, a few of which are illustrate'c in Fig. 1. For eX- ample, if it. is desired to set the punches four -inchesA apart, where they have previously For the purpose of convertibility, as just described, the bottom of the head 24 can be within the cavity, 42

'length of their dwell surfaces 67 dies being made in separate lengths so that they can be readily changed or replaced with dies having `holes of either different diame-l ters or holes at various distances apart. The bottom of the die bed 41 has outlet passages 46 so that the punchings can fall from the bed upon a tray 47, said tray being normally mounted on lugs 48 which are so disposed as to normally hold the tray in an inclined position, as clearly shown in Fig. 2,it being noted that when the head24 descends the plate will be punched, the punches passing through the plate and also through the respective die holes. Y

Buffer p'lungers 49 are slidably mounted in the die bed 41 and have disk heads 50 adapted to engage the lower surface of the plate 43 when positioned between the cavity 42. The buffer plungers 49 are backed bv coiled springs 51, as clearly shown in Fig. 2, said springs normally tending to move the buffer plungers upwardly.

Lifting rods 52, 53 and 54 are slidably mounted within the die bed 41, and at their upper ends have anti-friction rollers 55 thereon which are adapted to .engage the lower surface of the plate 43, at certain times as will hereinafter be more thoroughly described.

Three counter shafts 56, 57 and `58 are rotatabl coupled by driving belts 59 and 60.

The slaft 58 extendsto the outside of theframe 8 and has a sprocket wheel 61 secured thereto,said sprocket wheel v6l being pivotally connected to a sprocket wheel 62 on ,the outer end of the crank shaft 13 by a chain 63. In this manner, it is obvious that the shafts 56,57 and 58 will be simultaneously rotated when the crank shaft 13 is in motion. The counter shafts 56, 57 and 58 have, respectively, secured thereto cams 64, 6 5 and 66. TheseA cams, as clearly shown in Figs. 2 and 4, are adapted to engage the lower ends ofthe liftin rods 52, 53 and 54 and, as will be noted, t e cams 64, 65 and 66 are of various sizes or throws, and the varies decreasingly from the cam-64 to the cam 66. Fig. 2 of the drawing shows the lifting rods in their lowermost position and the plate 43 and resting upon the buffer plungers 49, ready to be punched.

. The head 24 supports depending suspension rods 68 which are slidable vertically and at their upper ends have enlargements 69 movable within chambers 70. The suspension rods 68 at their lower ends support a punch stripping plate 7l'which has holes 72 through which the respective punches 38 extend. The chambers are closed at their tops by plugs l73, see Coiled springs 74 are positioned within the chambers 70 between the tops of the enparticularly Fig. 5.'

largements 69 and the bottoms of the plugs These springs normally tend to move the suspension'l rods 68 downwardly and with them lthe stripping plate 71. This causes a relative movement between the stripping plate and the punches 38 so that'y Aif the plate 43, after being punched, at-

tempts to raise with the punches, said-relative movement between the stripping plate and the punches will cause the plate 43 to be stripped from the punches.

The front of my improved machine is provided with rollers. 74a which have their tops substantially in alinement with'- the top of the die bed 4L, These rollers 74a provide supporting means for the punched both during their insertion' and removal It will be further noted that the surface 75`of the die bed 41 slants downwardly, as clearly shown in Figs. 2 and 4 to facilitate the removal of the punched plate. The operation of my improved punching machine is as follows:

The plate to le punched is placed upon the rollers 744 and slid inwardly so as to occupy the position illustrated by the plate 43 in Fig. 2. The crank shaft 13 is then' started by any suitable controlling mechaplates to be nism (not illustrated) andthe head 24 descends until the punches 38 penetrate the plate 43 to punch the desired holes. 'The buffer plungers serve as intermediate supporting means to keep the portion between the. punched parts in the proper plane, 'so' that the punches strike fairly and squarely" against the plane 'upper surface of the plate. It will be understood that it is not in-tendedV that the springs 51 take the entire pressure of the punche's,'forthe reason that the die blocks will do this.

- However, the buffer plungers keep the plate in a plane during the'initial impact with the punches and thereby secure amore perfect punching of the plate. After the plate has been punched and the head 24 ascends` the stripper plate will insure the re` moval of the punched plate 43 from the punches. At this time the cams 64, 65 and 66 will operate in succession, flrst'to lift one edge of the' plate and then to lift the opposite edge ofthe plate so that the cams,

when all are operating upon their lifting 'I front end to its rear end.

v 'The anti-friction roller support provided i' 4by the upper ends of the lifting rods permits the plate to be easily'slid forwardly from the die bed 4I` upon the rollers 74;.

'From here it'can be liftedby a crane or other suitable conveying means and removed from the machine to permit another one to be inserted.

While I have described my invention as takinga particular form, it will be under stood that the various parts of my invention Vmay' be changed without departing from the spirit thereof, and hence I do not limit myself to the'precise construction set 'said article by t -forth, but.consider that I am at liberty to make such changes and alterations as fairly come within the scope of the .appended claims.

Having thus described my invention,

' what I claim as new and desire to secure by Letters Patent is:

yl. A punching mach-ine including punche been perforated due t0 the punching directly upward from the bed and hold them above-the bed so as topermit the free removal thereof; substantially as described.

3. A` punching machine including a bed for ythe article to be punched; means for punchin said article; and lifting means for raising and holding said article at an incline and above 'said bed, whereby the article 'can be freely removed from the machine; substantially as described.

4. A punching-machine in said article; and liftin means for raising andholding said artic eat an vincline and above said bed; saidA lifting means 'having anti-friction rollers thereon Y for engagement with said article, whereby fort ed and A p luding a bed 'for the article to be punched; meansfor punching the mais can be miiea @s fsaia. iis-.ing neans and thereby freely removed from the machine substantially as described.

, 5. A punching machine including a bed for the .article to be punched; me'ans for punching said article; lifting rods; and cams o' erative l n said lifting rods to raise t emiintci engagement with said article to lift said rticle'above said bed, whereby it substantially as described..

6. vygpun'ching mach e including azbe'd punch ng .said article; liftingrods; and cams ,operative upon said lifting yrods to raise them intov engagement with said article to lift 'said article above said bed; said cams being operative to move said lifting rods to various extents, whereby said article will assume an inclined position above said bed so that it can be freely v removed from the machine; substantially as described.

7. A punching machine including a bed for the'article to' be punched; means forf punching said article; liftingi rods; and

cams operative upon said` lifting rods lto raise them into engagement with said articl'e to lift said article above ,said bed; said lifting rods having anti-fiction rollersthereon for engagement with said plate,

whereby the plate will be raised above said bed so that it can be freely removed from the machine; substantially as described.

8. A punching machine including a bed for lthe article to be punched; means for punching said article; lifting rods; antifriction rollers carried by said lifting rods;

Acan be freelyremoved from-the machine;

article to be punched; 4means for and cams operative-upon said lifting rods to raise them to cause said anti-friction rollers to engage said article; said cams being op'- erative to move said lifting rods to various extents whereby said article will be raised above said bed and at an` incline so that the article can be freely rolled from the mal chine; substantially as described. 1

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

l 'HARRY COHEN. Witnesses:

MARY A. INGLAR,

CHAs. E. Porre. 

